通过水解方法制备了α-FeO(OH)和β-FeO(OH),研究了其对Cr(Ⅵ)的吸附性能及影响因素.结果表明,2种形式的FeO(OH)在弱酸性环境中对Cr(Ⅵ)均表现出很好的去除效果,吸附过程能够用Langmuir模型较好地描述,α-FeO(OH)和β-FeO(OH)对Cr(Ⅵ)的最大吸附容量分别为50.25和42.02 mg/g.对初始质量浓度达10 mg/L Cr(Ⅵ)的水样,通过α-FeO(OH)和β-FeO(OH)的吸附作用,可以将水中Cr(Ⅵ)控制在饮用水安全标准之下.200 mg/L Cl-、SO2-4,100 mg/L F-作为共存离子时,对2种吸附剂吸附Cr(Ⅵ)的效果无明显影响;但100 mg/L的H2PO-4和HCO-3共存,可使α-FeO(OH)、β-FeO(OH)对Cr(Ⅵ)的去除效果降低15%～20%.离子强度增加使吸附能力降低.
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